<template>
  <div class="navTab">
    <!-- 左侧轮播显示区域 -->
    <div class="classfiy">
      <div v-for="(item,index) in list[leftIndex].tabList" class="classfiy-item">
        <img :src="item.url" alt/>
        <div class="class-name">{{ item.title }}</div>
      </div>
    </div>
    <div v-if="list[leftIndex].tabList.length===0" class="image-mask">导航菜单</div>
    <!-- 右侧轮播编辑区域 -->
    <div v-if="list.length && list[leftIndex].showRight">
      <div class="editRightImg">
        <!-- 头部提示区域 -->
        <header class="title">
          导航菜单设置
          <div class="help-text">建议图片尺寸为36x36px，支持 jpg/png/gif 格式，大小不超过2MB</div>
        </header>
        <div class="editCon">
          <div
            v-for="(item,index) in list[leftIndex].tabList"
            :key="index"
            :class="rightIndex === index ? 'border' : ''"
            class="add_image"
            @click="right_click(index)"
          >
            <!-- 删除按钮 -->
            <img
              v-if="rightIndex === index"
              src="../../../../assets/settinyschool/delete.png"
              class="close"
              alt
              @click="close(index,item.id)"
            />
            <div class="image">
              <!--无图片-->
              <div v-if="!list[leftIndex].tabList[index].url">
                <div v-if="list[leftIndex].tabList[index]">+添加图片</div>
              </div>
              <!--有图片-->
              <div v-else class="showImage">
                <img :src="item.url" alt/>
              </div>
              <el-upload
                :file-list="fileList"
                :on-change="handleLogoChange"
                :http-request="uploadLogoFile"
                class="upload-demo"
                action=""
              >
                <el-button size="small" type="primary" class="uploadBtn">点击上传</el-button>
              </el-upload>
            </div>
            <div>
              <div>
                <span style="width:50px;">标题：</span>
                <el-input v-model="item.title" maxlength="10" size="mini" style="width:130px;"/>
              </div>
              <div style="margin-top:10px;">
                <span style="width:50px;">链接：</span>
                <el-input v-model="item.link" size="mini" style="width:130px;" />
              </div>
            </div>
          </div>
          <el-button
            v-if="list[leftIndex].tabList.length < 5"
            icon="el-icon-circle-plus"
            class="add_ad"
            style="width:100%;margin:5px 0;"
            @click="add_ad()"
          >添加一个导航栏
          </el-button>
        </div>
      </div>
    </div>
    <!-- 轮播链接选择课程弹框 -->
    <el-dialog :visible.sync="courseDialogVisible" title="选择课程" width="50%">
      <div>
        <span style="width:100px;">选择班级：</span>
        <el-autocomplete
          v-model="keyWord"
          :fetch-suggestions="querySearchAsync"
          placeholder="请输入内容"
          style="width:300px;"
          @select="handleSelect"
        />
      </div>
      <el-table :data="linkTableData" stripe style="width: 100%">
        <el-table-column prop="name" label="班级名称"/>
        <el-table-column prop="price" label="商品价格"/>
        <el-table-column prop="number" label="商品数量"/>
        <el-table-column prop="createTime" label="创建时间"/>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="text" @click="removeLink(scope.$index)">移除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <span slot="footer" class="dialog-footer">
        <el-button @click="courseDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="courseConfirm">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 轮播链接选择班级弹框 -->
    <el-dialog :visible.sync="classDialogVisible" title="选择班级" width="50%">
      <div>
        <span style="width:100px;">选择班级：</span>
        <el-autocomplete
          v-model="keyWord"
          :fetch-suggestions="querySearchAsync"
          placeholder="请输入内容"
          style="width:300px;"
          @select="handleSelect"
        />
      </div>
      <el-table :data="linkTableData" stripe style="width: 100%">
        <el-table-column prop="name" label="班级名称"/>
        <el-table-column prop="price" label="商品价格"/>
        <el-table-column prop="number" label="商品数量"/>
        <el-table-column prop="createTime" label="创建时间"/>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="text" @click="removeLink(scope.$index)">移除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <span slot="footer" class="dialog-footer">
        <el-button @click="classDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="classConfirm">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
  import {upLoadFile} from '@/api/upLoadFile'; // 数据接口
  import {delTab} from '@/api/system/mobile_assembly';

  export default {
    props: ['list', 'leftIndex'],
    data() {
      return {
        rightIndex: 0,
        fileList: [],
        keyWord: '',
        courseDialogVisible: false,
        classDialogVisible: false,
        logofile: '',
        linkTableData: [
          // {
          //   name: 'class NO.1',
          //   price: '2',
          //   number: '2',
          //   createTime: '2'
          // }
        ]
      }
    },
    mounted() {
      this.restaurants = this.loadAll()
    },
    methods: {
      handleLogoChange(file) {
        this.logofile = file.raw
      },
      uploadLogoFile() {
        const fileForm = new FormData()
        fileForm.append('name', this.logofile.name)
        fileForm.append('uid', this.logofile.uid)
        fileForm.append('file', this.logofile)
        upLoadFile(fileForm).then(response => {
          this.list[this.leftIndex].tabList[this.rightIndex].url = response.data.url
        })
      },
      right_click(index) {
        var that = this
        that.rightIndex = index
      },
      // 图片添加至list中
      add_ad() {
        this.list[this.leftIndex].tabList.push(
          {
            url: '',
            title: '',
            link: ''
          }
        )
      },
      // 删图片
      close(index, id) {
        console.log("id:" + id);
        if (id) {
          delTab(id).then(() => {
            this.$notify({
              title: '成功',
              message: '删除成功',
              type: 'success',
              duration: 2000
            });
            this.list[this.leftIndex].tabList.splice(index, 1)
          })
        } else {
          this.list[this.leftIndex].tabList.splice(index, 1)
        }
      },
      // 图片上传
      beforeAvatarUpload(file) {
        const isImg = file.type === 'image/jpeg' || 'image/png' || 'image/gif'
        const isLt2M = file.size / 1024 / 1024 < 2

        if (!isImg) {
          this.$message.error('上传头像图片只能是 JPG/PNG/GIG 格式!')
        }
        if (!isLt2M) {
          this.$message.error('上传头像图片大小不能超过 2MB!')
        }
        return isImg && isLt2M
      },
      handleChange(file, fileList) {
        this.fileList = fileList.slice(-1)
      },
      uploadSuccess(res, file, fileList) {
        this.list[this.leftIndex].tabList[this.rightIndex].url = URL.createObjectURL(file.raw)
      },
      // 添加链接
      handleCommand(command) {
        if (command === 'course') {
          this.courseDialogVisible = true
        }
        if (command === 'class') {
          this.classDialogVisible = true
        }
        if (command === 'member') {
          this.list[this.leftIndex].tabList[this.rightIndex].link = '会员专区'
        }
      },
      loadAll() {
        return [
          {'value': 'class NO.1', 'price': '2', 'number': '2', 'createTime': '2'}
        ]
      },
      querySearchAsync(queryString, cb) {
        var restaurants = this.restaurants
        var results = queryString ? restaurants.filter(this.createStateFilter(queryString)) : restaurants
        clearTimeout(this.timeout)
        this.timeout = setTimeout(() => {
          cb(results)
        }, 1000 * Math.random())
      },
      createStateFilter(queryString) {
        return (state) => {
          return (state.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0)
        }
      },
      handleSelect(item) {
        if (this.linkTableData.length > 0) {
          this.$message({
            message: '只能添加一个链接',
            type: 'warning'
          })
          return
        }
        this.linkTableData.push({
          name: item.value,
          price: item.price,
          number: item.number,
          createTime: item.createTime
        })
      },
      // 链接标签删除
      handleTagClose() {
        this.list[this.leftIndex].tabList[this.rightIndex].link = ''
      },

      // 移除链接列表
      removeLink(index) {
        this.linkTableData.splice(index, 1)
      },
      // 选择课程确认
      courseConfirm() {
        if (this.linkTableData.length === 0) {
          this.courseDialogVisible = false
          return
        }
        this.list[this.leftIndex].tabList[this.rightIndex].link = this.linkTableData[0].name
        this.courseDialogVisible = false
        this.linkTableData = []
        this.keyWord = ''
      },
      // 选择班级确认
      classConfirm() {
        if (this.linkTableData.length === 0) {
          this.classDialogVisible = false
          return
        }
        this.list[this.leftIndex].tabList[this.rightIndex].link = this.linkTableData[0].name
        this.classDialogVisible = false
        this.linkTableData = []
        this.keyWord = ''
      }
    }
  }
</script>
<style lang="scss" scoped>
  .navTab {
    .image-mask {
      width: 100%;
      height: 100%;
      background-color: #e1e1e1;
      font-size: 26px;
      color: #919191;
      font-weight: 700;
      text-align: center;
      line-height: 194px;
    }

    .haveImg {
      position: relative;
      width: 100%;
      height: 194px;

      /deep/ .el-carousel__container {
        height: 100%;

        img {
          width: 100%;
          height: 100%;
        }
      }

      .showImgTitle {
        position: absolute;
        width: 100%;
        left: 0;
        bottom: 0;
        height: 40px;
        line-height: 30px;
        padding: 5px 10px;
        color: #fff;
        background: rgba($color: #000, $alpha: 0.5);
      }
    }

    .classfiy {
      display: flex;
      align-items: center;
      padding: 10px 0;

      .classfiy-item {
        flex: 1;
        text-align: center;

        img {
          width: 36px;
          height: 36px;
        }

        .class-name {
          color: #989898;
          font-size: 14px;
          margin-top: 5px;
        }
      }
    }
  }

  .editRightImg {
    width: 400px;
    position: absolute;
    left: 105%;
    top: 0;
    padding: 10px;
    border: 1px solid #e1e1e1;
    background-color: #fafafa;

    .title {
      font-size: 14px;
      padding-bottom: 15px;
      margin-bottom: 15px;
      border-bottom: 1px solid #e1e1e1;

      .help-text {
        font-size: 12px;
        color: #616161;
        margin-top: 5px;
      }
    }

    .editCon {
      background-color: #fff;
      padding: 10px 5px;
      border: 1px solid #e1e1e1;
    }

    .add_image:after {
      display: block;
      clear: both;
      content: '';
      visibility: hidden;
      height: 0;
    }

    .add_image {
      position: relative;
      border: 1px solid rgba($color: #fff, $alpha: 0);
      padding: 10px;

      .close {
        position: absolute;
        top: -10px;
        right: -10px;
        width: 20px;

        img {
          width: 100%;
        }
      }

      .image {
        position: relative;
        float: left;
        height: 76px;
        width: 100px;
        margin-right: 10px;
        line-height: 76px;
        text-align: center;
        background-color: #f5f5f5;

        /deep/ .uploadBtn {
          width: 100%;
          height: 100%;
          position: absolute;
          top: 0;
          left: 0;
          opacity: 0;
        }

        /deep/ .el-upload-list {
          display: none;
        }
      }

      .showImage {
        height: 76px;
        width: 100px;
        text-align: center;

        img {
          width: 100%;
          height: 100%;
        }
      }
    }

    .add_image.border {
      border: 1px solid #408ffb;
    }
  }
</style>
